求x的值 343(x-1)立方-27=0

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求x的值343(x-1)立方-27=0求x的值343(x-1)立方-27=0求x的值343(x-1)立方-27=0343(x-1)³-27=0343(x-1)³=27(x-1)&#

求x的值 343(x-1)立方-27=0
求x的值 343(x-1)立方-27=0

求x的值 343(x-1)立方-27=0
343(x-1)³-27=0
343(x-1)³=27
(x-1)³=27/343
(x-1)³=(3/7)³
x-1=3/7
x=1+3/7
x=1又3/7
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343(x-1)立方-27=0
(x-1)立方=27/343
x-1=3/7
x=1+3/7
x=10/7

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343(x-1)³-27=0
343(x-1)³=27
(x-1)³=27/343
(x-1)³=(3/7)³
x-1=3/7
x=1+3/7
x=1又3/7

343(x-1)立方-27=0
343(x-1)立方=27
(x-1)立方=27/343
x-1=3/7
x=10/7